Does anyone have any figures for oscillator startup time using a 4MHz
ceramic resonator? Comparison to times for RC or crystal would be
great.

I will be using a PIC16F877 sitting in sleep mode most of the time
until woken up by interrupt. To keep power dissipation lowest we want
it to wake up as soon as possible do it's thing and go back to sleep.
My client has previously used RC mode for this reason, but now needs
better timing accuracy. I have a feeling that a resonator will start
quicker than a crystal but I need to verify that. Lots of my other
projects use a 4MHz resonator with internal caps but haven't used
sleep mode. Maybe I'll write a test program later today nad try it
myself.

Thanks.

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Brent Brown, Electronic Design Solutions
16 English Street, Hamilton, New Zealand
Ph/fax: +64 7 849 0069
Mobile/txt: 025 334 069
eMail:  brent.brown@clear.net.nz

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